CVE-2026-126181 Hardcoded credentials in FortiManager
Adjacent authenticated attackers can join FortiGate FGFM mesh configuration-syncs using the default pre-shared key; FortiGate administrators should care.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Harmful if only installed
- Yes
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-126181?
CVE-2026-126181 is a high-severity hardcoded credentials vulnerability in Fortinet FortiManager, published on 11 Nov 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A use of hard-coded credentials vulnerability in Fortinet FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager 7.2 all versions may allow an adjacent-network authenticated attacker with user permission to join the FGFM configuration-sync mesh of the affected FortiGate deployment via the default pre-shared key.
Weakness: CWE-798
Which versions are affected by CVE-2026-126181?
Having an affected version installed is enough. The problem is in what it ships or how it installs, so no code has to call it.
How do I fix CVE-2026-126181?
No fix has been published for CVE-2026-126181 yet. Limit exposure of the affected software until one is available.
Upgrade, then change or revoke the exposed credential wherever it is used. More about Hardcoded credentials.
Is CVE-2026-126181 being exploited?
There is no known exploitation of CVE-2026-126181 in the wild and no public exploit code.
Sources
Also known as GHSA-8xfm-8jxr-pcpm.